[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <28116f0b-4acd-d72c-aaee-c2fc63ad8190@redhat.com>
Date: Wed, 2 Nov 2022 19:00:56 +0100
From: Paolo Bonzini <pbonzini@...hat.com>
To: Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Junaid Shahid <junaids@...gle.com>,
Sean Christopherson <seanjc@...gle.com>, tglx@...utronix.de,
mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
x86@...nel.org, kvm@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 6.0 03/11] kvm: x86: Do proper cleanup if
kvm_x86_ops->vm_init() fails
On 10/14/22 15:51, Sasha Levin wrote:
> From: Junaid Shahid <junaids@...gle.com>
>
> [ Upstream commit b24ede22538b4d984cbe20532bbcb303692e7f52 ]
>
> If vm_init() fails [which can happen, for instance, if a memory
> allocation fails during avic_vm_init()], we need to cleanup some
> state in order to avoid resource leaks.
>
> Signed-off-by: Junaid Shahid <junaids@...gle.com>
> Link: https://lore.kernel.org/r/20220729224329.323378-1-junaids@google.com
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
> arch/x86/kvm/x86.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index b0c47b41c264..11fbd42100be 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -12080,6 +12080,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
> if (ret)
> goto out_page_track;
>
> + ret = static_call(kvm_x86_vm_init)(kvm);
> + if (ret)
> + goto out_uninit_mmu;
> +
> INIT_HLIST_HEAD(&kvm->arch.mask_notifier_list);
> INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
> atomic_set(&kvm->arch.noncoherent_dma_count, 0);
> @@ -12115,8 +12119,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
> kvm_hv_init_vm(kvm);
> kvm_xen_init_vm(kvm);
>
> - return static_call(kvm_x86_vm_init)(kvm);
> + return 0;
>
> +out_uninit_mmu:
> + kvm_mmu_uninit_vm(kvm);
> out_page_track:
> kvm_page_track_cleanup(kvm);
> out:
Acked-by: Paolo Bonzini <pbonzini@...hat.com>
Powered by blists - more mailing lists